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927 Commits

Author SHA1 Message Date
drh
eb9b884c2d Improved ".selecttrace" output. 
FossilOrigin-Name: c0b61f7092a7fd2c5f51db26ce7a7a5c75c227fe
 2014-09-21 00:27:26 +00:00
dan
7c0a4720ca Candidate fix for [d11a6e908f]. 
FossilOrigin-Name: 89398880bcfff96e91d2a9c45774f5fb3209ffc1
 2014-09-20 20:38:48 +00:00
drh
9300adbc79 Fix the SELECTTRACE_ENABLE macro so that it doesn't cause problems for 
testfixture.  Add new SELECTTRACE() calls.

FossilOrigin-Name: f1ba68f131d2f03e4a7bc50cde23a7609d384279
 2014-09-20 20:24:49 +00:00
drh
abd4c72357 Enable SELECT query planning tracing when compiled with 
SQLITE_ENABLE_SELECTTRACE and either SQLITE_DEBUG or SQLITE_TEST.

FossilOrigin-Name: cbe0cf9ddf46f0a678c85d49bfa74e3b7712e1a1
 2014-09-20 18:18:33 +00:00
drh
9588ad95c1 Do not flatten aggregate subqueries that contain min() or max() functions 
so that if the min()/max() are discarded by the outer query, they still
function and cause non-aggregate expression to be evaluated on the minimal
or maximal row.

FossilOrigin-Name: 0bdf1a086b3946722f4d4b328e25917f61c14713
 2014-09-15 14:46:02 +00:00
drh
6092d2bcfe Adjust comments to show that subquery flattening restriction (10) was 
removed from the code back in 2005.  This is a comment change only.

FossilOrigin-Name: 4ff0eb96bc364baed2d8005c69291ca9240b99dd
 2014-09-15 11:14:50 +00:00
drh
236241aeb0 Simplify the way the column cache is managed around OP_Move instructions. 
FossilOrigin-Name: 320556233e19cdd9d590a09655c3465754700d39
 2014-09-12 17:41:30 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
503ae86508 Merge recent performance enhancements from trunk onto the threads branch. 
FossilOrigin-Name: 35c44a3c73e2e8b14ff194c41986f4bdb9dfe737
 2014-08-29 14:40:07 +00:00
drh
53932ce8fa Avoid an unnecessary OP_Move operation for expression subqueries. 
FossilOrigin-Name: 462f42af52f146fd328ddcbbe78c8444ef7bd2c3
 2014-08-29 12:29:39 +00:00
drh
83b25d32d7 Merge the pre-3.8.6 changes into the threads branch. 
FossilOrigin-Name: a608fd1d52606a009c3acc7f1d184b86a7df3c82
 2014-08-14 14:02:48 +00:00
drh
fcf2a7757e Fix an assert() statement in the SELECT code generator that was 
incorrect following an OOM error.

FossilOrigin-Name: a179e41e40dba4c19a488985f77777acd27b689d
 2014-08-12 01:23:07 +00:00
drh
da2e5862d1 Merge all recent changes from trunk. 
FossilOrigin-Name: a353a8515fb2eff86042d0c33e39772f4d04e0b3
 2014-08-06 02:03:35 +00:00
drh
4336b0e64a Improved VdbeCoverage() macros. A few minor simplifications to generated 
VDBE code.

FossilOrigin-Name: 01f60027ad1841051fa493a646141445f8971357
 2014-08-05 00:53:51 +00:00
drh
d0dc5d4984 Avoid closing a pseudo-table associated with sorting in a co-routine since 
that pseudo-table might be used again in an outer loop.

FossilOrigin-Name: 6d81805298ea882f5fee99504d5a95f1a762a90b
 2014-06-03 14:42:34 +00:00
drh
ff14013496 Merge changes from the trunk into the threads branch. 
FossilOrigin-Name: 416cb091267de91b9cadee9f7453b8627570b7d3
 2014-05-29 20:24:20 +00:00
drh
48dd1d8e28 Change the name of the Index.autoIndex field to Index.idxType and provide 
symbolic names for the various values of that field rather than using
magic numbers.

FossilOrigin-Name: d16e575dacc811de0f7b58a0d1cd243678dce6c5
 2014-05-27 18:18:58 +00:00
drh
79045882c9 Merge recent trunk changes into the threads branch. 
FossilOrigin-Name: 8215202759dbd863edf20aa26ff21da20bc35d73
 2014-05-26 20:15:21 +00:00
dan
e96f2df3dd Changes to the output of EXPLAIN QUERY PLAN to make it clearer when a query uses the PRIMARY KEY index of a WITHOUT ROWID table. 
FossilOrigin-Name: 9268df305b90ac11e44b3107bbab5becf38860b7
 2014-05-23 17:17:06 +00:00
drh
fb0d6e56d6 Merge latest trunk enhancements and fixes into the orderby-planning branch. 
FossilOrigin-Name: 84862d3a095629d20c8e7b8a16f4dc26cd41ab6d
 2014-05-02 13:09:06 +00:00
dan
3852413246 Fix an obscure problem to do with temp register allocation that could occur if more than one simple SELECT within a compound SELECT uses a partial sort. 
FossilOrigin-Name: 427409ae106cdab7892a6b50fe30c5f52de5addc
 2014-05-01 20:26:48 +00:00
dan
cfc9df76e1 Store values loaded from the stat1 table as logarithmic values in memory. 
FossilOrigin-Name: 1bd74c49ddab6f53bb6eaa57907eff44c2580dd6
 2014-04-25 15:01:01 +00:00
drh
0ff435a782 Reopen the orderby-planning branch and merge in the latest trunk enhancements 
and fixes.

FossilOrigin-Name: 6077ddcd93318e24b9756adaaf293ba9fb3cedf7
 2014-04-24 15:06:25 +00:00
dan
374cd78c1d Avoid discarding an ORDER BY clause in the case where an identical GROUP BY clauses uses an index to group, but not sort, the rows. Fix for [b75a9ca6b0]. 
FossilOrigin-Name: de9a490f594183f337a2ec9e0f87792eac83548b
 2014-04-21 13:21:56 +00:00
dan
78d5843245 Remove the sequence values from sorter records used by ORDER BY as well. 
FossilOrigin-Name: c3ae3697832a00d4d5758988a8766bdbb691e6b8
 2014-03-25 15:04:07 +00:00
dan
dd23c6bfb4 Omit the sequence value from sorter records used by GROUP BY queries that cannot use an index. 
FossilOrigin-Name: 3f90abddc31ac20739778c235a834c33f7057997
 2014-03-24 20:19:07 +00:00
drh
fd0a2f9756 Avoid unnecessary moving of content between registers during an ORDER BY. 
FossilOrigin-Name: 4f472accf072d9cb64f209923924b26f21b13d27
 2014-03-24 18:08:15 +00:00
dan
3f802ebce2 Remove an unnecessary temporary register allocation. 
FossilOrigin-Name: 5d506743f541b022cde04a9606baa4680cdfd70b
 2014-03-24 09:34:58 +00:00
drh
83553eefaf Remove a pointless OP_Once operation in ORDER BY clauses with LIMIT. 
FossilOrigin-Name: e6c59d23316c83b318b1a94d9b28a5d321737fa5
 2014-03-24 02:20:53 +00:00
drh
70f624c3a9 Further enhancements to geneverated VDBE code for ORDER BY. 
FossilOrigin-Name: e7188fad87ec82d36a39b80ccaf8006bf45a9bcd
 2014-03-24 01:43:50 +00:00
drh
d345a66428 merge fixes from trunk 
FossilOrigin-Name: faf7f9caf526ab33a6fdb9c89b45a0483510db21
 2014-03-23 18:47:00 +00:00
drh
f45f2326a2 Use only a single OP_MakeRecord instead of two when constructing entries 
to go onto a sorter.

FossilOrigin-Name: d696cdedacd39075aa7fc407ab7c7e50f01d9f39
 2014-03-23 17:45:03 +00:00
drh
dbfca2b7f8 Clear the sort-order flags on the KeyInfo object associated with the 
OP_Compare/OP_Jump of the block-sort logic, in order to make the OP_Jump
fully testable.

FossilOrigin-Name: 9b2838f23e5f52369eeb078f60bd231cc54362f8
 2014-03-22 02:19:53 +00:00
drh
59b8f2e108 Fix the ORDER BY optimization logic so that it will do a block-sort on 
a partial DESC ORDER BY.  This enhancement uncovered a memory leak in
pushUntoSorter() which is also fixed.

FossilOrigin-Name: c36f74611cf17ad2ff198a2ac2054d7ab451a72c
 2014-03-22 00:27:14 +00:00
drh
9a4444778f Add the ability to use indices for the first few terms of an ORDER BY clause, 
then sort in batches to handle the later terms.

FossilOrigin-Name: fa06a6fed9f48322d9b89721799ba12c46efa898
 2014-03-21 20:58:42 +00:00
drh
8e1ee88c88 Change the names of SRT_DistTable and SRT_Table used by CTE to more 
meaningful SRT_DistFifo and SRT_Fifo, respectively.  Simplify the
IgnorableOrderby() macro in the process.

FossilOrigin-Name: 45d8cc678d128f1dda6469864215a8ed9de4366a
 2014-03-21 19:56:09 +00:00
dan
9afccba269 Avoid leaking memory in an obscure case where the flattener adds an ORDER BY clause to the recursive part of a recursive query. 
FossilOrigin-Name: 1f413aca00015100224273480e1ce39a76bf93ab
 2014-03-21 19:27:54 +00:00
drh
cc08fa48b8 Merge the OFFSET-on-query-without-FROM fix from trunk. 
FossilOrigin-Name: 71e9ae72c272dc86720b2bfe719f57de437c400b
 2014-03-21 18:45:19 +00:00
drh
a22a75e5ca Fix the OFFSET clause so that it works correctly on queries that lack 
a FROM clause.  Ticket [07d6a0453d4ed8].

FossilOrigin-Name: 179ef81648b0ad557df78b7712f216b876b6fb65
 2014-03-21 18:16:23 +00:00
drh
6284db908a Fix query planner weights associated with choosing block-sorting. Fix 
block sorting of tables with collating functions.  Fix various test cases.
All "veryquick" tests are now passing, though more tests need to be added.

FossilOrigin-Name: 01afbf97c0ff29667806e9a7c4d74ca717819de5
 2014-03-19 23:24:49 +00:00
drh
65ea12cb4a Make it possible for block-sort to use the OP_SorterOpen sorter in addition 
to a generic OP_OpenEphemeral.

FossilOrigin-Name: 7ce2daafd39a117041bfdd0a7132e2764fe7a74b
 2014-03-19 17:41:36 +00:00
drh
26d7e7c6b7 Fix a problem in the block-sort logic that can arise if the VDBE opcode 
array is resized while the block-sort logic is being coded.  "make test"
now runs to completion, though there are still 17 failures.

FossilOrigin-Name: 62f3a22050e0f11c789374f8a3785df0a84c24cb
 2014-03-19 16:56:58 +00:00
drh
ba194369ad Avoid reusing temporary registers in co-routines when doing 
block-sorting.

FossilOrigin-Name: 463d921b519b08648a715e987c430f06b06bae84
 2014-03-19 15:17:24 +00:00
drh
079a307259 First attempt at getting block-sort to work. This is an incremental check-in. 
There are many problems still to be worked out.

FossilOrigin-Name: 59742dd4c5259883850044d0938248b009ebd045
 2014-03-19 14:10:55 +00:00
drh
ddba0c227e Make the partial-ORDER-BY information in the query planner available to the 
SELECT code generator.  Still doesn't make a difference in the generated code.

FossilOrigin-Name: e258df236b7de70087c8227cb209080e55b9bf9c
 2014-03-18 20:33:42 +00:00
drh
19c6d96aec Avoid indexing off the front end of an array when creating a view with 
two or more blank column names in the SELECT statement that defines the view.

FossilOrigin-Name: 554501f158534f9c27fd51900589c2ab7cf300d8
 2014-03-04 21:19:51 +00:00
drh
6295524e3d Change an OP_SCopy into an OP_Copy in a case where the destination might be 
used after the source has changed.

FossilOrigin-Name: c0fa0c0e2de50d7eda19ab8862496b18eff93538
 2014-03-03 17:36:39 +00:00
drh
7e4efaecad More efficient removal of duplicates in recursive queries using the UNION 
compound operator.

FossilOrigin-Name: 06c2db875e6cabd81c2a153b2fa4aba03eaed268
 2014-02-26 21:35:31 +00:00
drh
7d1761059b Add VdbeCoverage() and VdbeCoverageIf() macros for improved VDBE coverage 
testing.

FossilOrigin-Name: b92d31a97d5fe4606d9ae1393c7f3e052f46bf5a
 2014-02-18 03:07:12 +00:00
drh
688852ab15 Add logic to do test coverage measurements on the VDBE code. 
FossilOrigin-Name: ce184c7bb16988641d37c908d9b3042456d4be3d
 2014-02-17 22:40:43 +00:00